user32: Remove some no longer needed wine 16bit headers.

dlls/user32/class.c

@@ -31,7 +31,6 @@
 #include "windef.h"
 #include "winbase.h"
 #include "wingdi.h"
-#include "wine/winuser16.h"
 #include "wine/unicode.h"
 #include "win.h"
 #include "user_private.h"

dlls/user32/clipboard.c

@@ -46,7 +46,6 @@
 #include "wingdi.h"
 #include "winuser.h"
 #include "winerror.h"
-#include "wine/winuser16.h"
 #include "wine/winbase16.h"
 #include "user_private.h"
 #include "win.h"

dlls/user32/listbox.c

@@ -40,7 +40,6 @@
 #include "winbase.h"
 #include "wingdi.h"
 #include "wine/winuser16.h"
-#include "wine/winbase16.h"
 #include "wine/unicode.h"
 #include "user_private.h"
 #include "controls.h"

dlls/user32/msgbox.c

@@ -25,8 +25,6 @@
 #include "windef.h"
 #include "winbase.h"
 #include "wingdi.h"
-#include "wine/winbase16.h"
-#include "wine/winuser16.h"
 #include "winternl.h"
 #include "dlgs.h"
 #include "user_private.h"

dlls/user32/nonclient.c

@@ -25,7 +25,6 @@
 #include "windef.h"
 #include "winbase.h"
 #include "wingdi.h"
-#include "wine/winuser16.h"
 #include "win.h"
 #include "user_private.h"
 #include "controls.h"

dlls/user32/text.c

@@ -35,7 +35,6 @@
 #include "windef.h"
 #include "winbase.h"
 #include "wingdi.h"
-#include "wine/winuser16.h"
 #include "wine/unicode.h"
 #include "winnls.h"
 #include "controls.h"

dlls/user32/winpos.c

@@ -31,7 +31,6 @@
 #include "winbase.h"
 #include "wingdi.h"
 #include "winerror.h"
-#include "wine/winuser16.h"
 #include "wine/server.h"
 #include "controls.h"
 #include "user_private.h"

dlls/user32/wsprintf.c

@@ -32,7 +32,6 @@
 #include "winuser.h"
 
 #include "wine/winbase16.h"
-#include "wine/winuser16.h"
 
 #include "wine/debug.h"